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题解 | #二叉树的最大深度#

/** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { public: /** * * @...

C++

2022-02-21

0 229

题解 | #重建二叉树#

/** * Definition for binary tree * struct TreeNode { * int val; * TreeNode *left; * TreeNode *right; * TreeNode(int x) : val(x),...

C++

2022-02-21

0 287

题解 | #将升序数组转化为平衡二叉搜索树#

/** * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * TreeNode(int x) : val(x), left(NULL), right(NULL) {} * ...

C++

2022-02-21

0 304

题解 | #大数乘法#

class Solution { public: /** * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可 * * @param s string字符串第一个整数 * @param t string字符串第二个整数 ...

C++

2022-02-21

0 300

题解 | #二叉树中和为某一值的路径(二)#

/* struct TreeNode { int val; struct TreeNode *left; struct TreeNode *right; TreeNode(int x) : val(x), left(NULL), right(NULL) { } };*/ class...

C++

2022-02-21

0 262

题解 | #二叉树中和为某一值的路径(一)#

DFS求解 * struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { private: int res = false; ...

C++

2022-02-21

0 303

题解 | #买卖股票的最好时机(一)#

public: /** * * @param prices int整型vector * @return int整型 */ int maxProfit(vector<int>& prices) { // w...

C++

2022-02-20

0 270

题解 | #二叉树中的最大路径和#

* struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { private: int res = INT_MIN; publi...

C++

2022-02-20

0 254

题解 | #二叉树根节点到叶子节点的所有路径和#

* struct TreeNode { * int val; * struct TreeNode *left; * struct TreeNode *right; * }; */ class Solution { private: int res = 0; int cur...

C++

2022-02-20

0 247

题解 | #链表中环的入口结点#

struct ListNode { int val; struct ListNode *next; ListNode(int x) : val(x), next(NULL) { } }; */ class Solution { public: ...

C++

2022-02-20

0 278